Hydroxylamine → 2-(5-(((5-fluoro-2-oxoindolin-3-ylidene)hydrazono)methyl)-2,4-dimethyl-1H-pyrrole-3-carboxamido)-N-hydroxyacetamide

HRID 251657Notes

Reaction equation

[F:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][C:6](=[O:11])[C:5]2=[N:12][N:13]=[CH:14][C:15]1[NH:19][C:18]([CH3:20])=[C:17]([C:21]([NH:23][CH2:24][C:25](O)=[O:26])=[O:22])[C:16]=1[CH3:28].C(N(CC)CC)C.ClC(OCC)=O.[NH2:42][OH:43]>[Cl-].[Na+].O.CN(C=O)C>[F:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][C:6](=[O:11])[C:5]2=[N:12][N:13]=[CH:14][C:15]1[NH:19][C:18]([CH3:20])=[C:17]([C:21]([NH:23][CH2:24][C:25]([NH:42][OH:43])=[O:26])=[O:22])[C:16]=1[CH3:28]

Participants

Conditions

Temperature: 0 °C

Procedure

2-(5-(((5-fluoro-2-oxoindolin-3-ylidene)hydrazono)methyl)-2,4-dimethyl-1H-pyrrole-3-carboxamido)-acetic acid (385 mg, 1 mmol), triethylamine (151 mg, 1.5 mmol) and 20 ml of DMF were stirred at 0° C. while ethyl chloroformate (163 mg, 1.5 mmol) was added. The mixture was stirred at 0° C. for 2 hours, and then 50% aqueous solution of hydroxylamine (1.32 g, 20 mmol) was added. The mixture was stirred for 3 hours at room temperature, and then diluted with 1000 mL of brine. The solids were collected by vacuum filtration, washed with water and dried under vacuum to give the title compound (140 mg, 35%) as a red solid. LC-MS (m/z) 401 (M+1).

Workup

additionwas added
stirringThe mixture was stirred for 3 hours at room temperature
filtrationThe solids were collected by vacuum filtration
washwashed with water
customdried under vacuum

Sources & evidence

ORD record: ord-e6e779978de244b1b1f99b84451d2b09
Source dataset: uspto-grants-2011_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07863315B2

Reaction notes

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